frac·tion

fraction

/frac·tion/ (frak´shun)

1. a portion of something larger.

2. in chemistry, one of the separable constituents of a substance.frac´tional

ejection fraction the proportion of the volume of blood in the ventricles at the end of diastole that is ejected during systole; it is the stroke volume divided by the end-diastolic volume, often expressed as a percentage. It is normally 65 ± 8 per cent; lower values indicate ventricular dysfunction.

plasma protein fraction a preparation of serum albumin and globulin obtained by fractionating source blood, plasma, or serum from healthy human donors; used as a blood volume supporter.

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